不同热边界条件下氢气干燥器的性能实验研究  

Experimental study on hydrogen drier performance in different thermal boundary conditions

作　　者：彭德其[1] 朱冬生[1] 曾力丁[1] 范忠雷[1] 何露[1] 

机构地区：[1]华南理工大学传热强化与节能国家教育部重点实验室,广东广州510640

出　　处：《中国电力》2005年第12期55-58,共4页Electric Power

基　　金：广东省科技计划项目资助(编号2004A10702006);新世纪优秀人才支持计划

摘　　要：氢冷发电机运行中氢气湿度超标的危害性较大,在比较不同干燥方法特点的基础上,采用分子筛变温变压吸附再生工艺对氢气进行干燥。研究了在不同热边界条件下吸附床解吸后的吸附特性。实验结果表明:与自然对流情况比较,吸附床外部的绝热措施使解吸时床层温度提高78.6%左右,同时绝热解吸后吸附容量提高95%左右;但是绝热吸附床沿轴向温度分布不均匀,最大温差可达120℃。在将吸附床外部设计为绝热情况下,需进一步采用强化传热措施使吸附床温度分布均匀,降低吸附床再生的能耗,使解吸更加均匀。It is harmful in the case that the moisture of hydrogen exceeds the standard in hydrogen-cooled generator. Based on the comparison of different drying methods, temperature and pressure swing regeneration process was introduced to dry the hydrogen by means of molecular sieve. Adsorption performance was studied in different regeneration thermal boundary condition, compared with that in nature convection boundary condition, the experimental results show that the temperature and adsorption capacity of adsorption bed has increased about 78.6% and 95% in thermal insulation boundary condition respectively. The axial temperature distribution along adsorption bed is uneven, and the maximum temperature difference is up to 120 ℃. As a result, the thermal boundary condition of adsorption bed must be designed as thermal insulation, furthermore, heat enhancement is required to improve the temperature distribution so as to reduce the energy consumption in regeneration and assure the evenness of desorption.

关 键 词：氢气 干燥 热边界条件 再生 吸附容量 

分 类 号：TM311[电气工程—电机]